At McDonnell Roofing, we place our focus on building relationships with customers based on quality work and trust for long-te ... rm, repeat business. All services come with a McDonnell Roofing guarantee with the additional guarantees of the largest and most reputable manufacturers and suppliers in the industry. When many competitors have folded, McDonnell Roofing has weathered the test of time to honor warranties and continue building new and exciting relationships. read more